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/******************************************************************************* |
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* Copyright (c) 2000, 2009 IBM Corporation and others. |
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* All rights reserved. This program and the accompanying materials |
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* are made available under the terms of the Eclipse Public License v1.0 |
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* which accompanies this distribution, and is available at |
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* http://www.eclipse.org/legal/epl-v10.html |
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* |
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* Contributors: |
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* IBM Corporation - initial API and implementation |
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*******************************************************************************/ |
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package org.eclipse.jdt.core; |
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/** |
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* A source range defines an element's source coordinates relative to |
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* its source buffer. |
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* @see ISourceRange |
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* @since 3.6 |
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*/ |
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public class SourceRange implements ISourceRange { |
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private int offset, length; |
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public SourceRange(int offset, int length) { |
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this.offset = offset; |
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this.length = length; |
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} |
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/* |
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* @see Object#equals(Object) |
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*/ |
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public boolean equals(Object obj) { |
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if (!(obj instanceof ISourceRange)) |
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return false; |
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ISourceRange sourceRange = (ISourceRange) obj; |
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return sourceRange.getOffset() == this.offset && sourceRange.getLength() == this.length; |
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} |
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/** |
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* @see ISourceRange |
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*/ |
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public int getLength() { |
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return this.length; |
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} |
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/** |
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* @see ISourceRange |
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*/ |
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public int getOffset() { |
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return this.offset; |
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} |
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/* |
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* @see Object#hashCode() |
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*/ |
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public int hashCode() { |
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return this.length ^ this.offset; |
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} |
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|
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/** |
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* Helper method that answers whether a valid source range is available |
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* in the given ISourceRange. When an element has no associated source |
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* code, Java Model APIs may return either <code>null</code> or a range of |
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* [-1, 0] to indicate an invalid range. This utility method can be used |
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* to detect that case. |
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* |
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* @param range a source range, can be <code>null</code> |
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* @return <code>true</code> iff range is not null and range.getOffset() is not -1 |
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*/ |
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public static boolean isAvailable(ISourceRange range) { // see https://bugs.eclipse.org/bugs/show_bug.cgi?id=130161 |
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return range != null && range.getOffset() != -1; |
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} |
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public String toString() { |
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StringBuffer buffer = new StringBuffer(); |
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buffer.append("[offset="); //$NON-NLS-1$ |
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buffer.append(this.offset); |
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buffer.append(", length="); //$NON-NLS-1$ |
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buffer.append(this.length); |
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buffer.append("]"); //$NON-NLS-1$ |
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return buffer.toString(); |
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} |
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} |
